FANUC alarms are divided into peripheral alarms and system alarms. Peripheral alarms are alarms with alarm numbers between 1000 and 2000.
They are divided into rapid alarms and fault alarms. There are many types of system alarms, including servo alarms, spindle alarms, macro program alarms, program related alarms, etc. Typically, these alarms can be found in the FANUC maintenance manual.
As for the peripheral alarm, this is the alarm issued by the machine tool manufacturer. It can be found in the manual supplied with the machine. But if the manual is lost, how can you quickly find the cause of the alarm?
The following methods are for reference only.
As we all know, the PMC address of FANUC includes XYRKDTCA, whose address A is used to activate the alarm.
The alarm address and alarm information have the following correspondence:
That is, if address A is enabled and alarm text is available, a corresponding alarm will appear. So, when an alarm occurs, the idea to find the cause is as follows:
Now find the connected address A in PMC maintenance, then find the coil corresponding to address A in the ladder diagram, then step by step
Find the alarm activation conditions, that is, you can find the cause of the final alarm.
Some machine tool factories use a byte of address A when writing an alarm, you can first search for a byte of address A, and then find the relationship between address A and the address R corresponding to address A. The corresponding format for writing a ladder diagram is as follows:
From this statement, you can see that when each bit of R580 is connected, the alarm corresponding to A0.0-A0.7 will be triggered.
Then find out why R580.0-R580.7 is connected.
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